Portable air filtration device



FIG. 1 is a front perspective view of a portable air filtration device.

FIG. 2 is a front view of the portable air filtration device of FIG. 1.

FIG. 3 is a rear view of the portable air filtration device of FIG. 1.

FIG. 4 is a top view of the portable air filtration device of FIG. 1.

FIG. 5 is a right side view of the portable air filtration device of FIG. 1; and,

FIG. 6 is a left side view of the portable air filtration device of FIG. 1.

The broken lines illustrate environment and/or boundaries of the claimed design, and form no part of the claimed design. 

CLAIM The ornamental design for a portable air filtration device, as shown and described. 